Tuesday November 12, 2019

Alzheimer’s Linked To Improper Sleep In Elderly: Study

Staying awake for prolonged periods causes tau levels to rise.

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alzheimer's, cholesterol
One hemisphere of a healthy brain (L) is pictured next to one hemisphere of a brain of a person suffering from Alzheimer disease. VOA

Poor sleep among older adults has been associated with Alzheimer’s, suggesting that good sleep habits may help preserve brain health, finds a new study.

Studying mice and people, researchers at the Washington University School of Medicine in St. Louis, found that sleep deprivation increases levels of the key Alzheimer’s protein, tau.

And, in follow-up studies on mice, the team has shown that sleeplessness accelerates the spread of toxic clumps of tau, a harbinger of brain damage and decisive step along the path to dementia through the brain.

These study indicated that lack of sleep alone helps drive the disease.

alzheimer's, cholesterol
Poor sleep can predict Alzheimer’s Risk in elderly. Pixabay

Tau is normally found in the brain — even in healthy people — but under certain conditions it can clump together into tangles that injure nearby tissue and presage cognitive decline.

“The interesting thing about this study is that it suggests that real-life factors such as sleep might affect how fast the disease spreads through the brain,” said the researchers, including David Holtzman, MD from the varsity.

This study shows that sleep disruption causes the damaging protein tau to increase rapidly and to spread over time, Holtzman added.

To find out whether lack of sleep was directly forcing tau levels upward, the team measured tau levels in mice and people with normal and disrupted sleep.

Cognitive Impairment
Alzheimer’s disease patient Isidora Tomaz, 82, sits in an armchair in her house in Lisbon, Portugal. It’s predicted that by 2050, 135 million Americans are going to suffer from mild cognitive impairment, a precursor of Alzheimer’s. VOA

Findings, published in the journal Science, showed that tau levels in the fluid surrounding brain cells were about twice as high at night, when the animals were more awake and active, than during the day, when the mice dozed more frequently.

Similarly, disturbing the mice’s rest during the day caused daytime tau levels to double.

Much the same effect was seen in people indicating that a sleepless night caused tau levels to rise by about 50 per cent, the researchers discovered.

Furthermore, staying up all night enables people sleep more the next chance they get in addition to being stressed and cranky.

Also Read: Professor Offers Students Higher Grade For More Sleep

The mice too, rebounded from a sleepless day by sleeping more later.

Hence, staying awake for prolonged periods causes tau levels to rise. Altogether, tau is routinely released during waking hours by the normal business of thinking and doing, and then this release is decreased during sleep allowing tau to be cleared away, the findings suggested.  (IANS)

Next Story

Researchers Find That Discount on Medical Drugs Can Make you Purchase Them More

The study used Canadian national pharmacy data from 2.82 million prescriptions for 89 different medications where brand-name drug discount cards were used and compared

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Discount
While Discount cards decreased some patients' out-of-pocket costs by 7 per cent on an average, the study surprisingly found that many patients who filled prescriptions using a card were worse-off financially as a result. Pixabay

Researchers have found that brand-name Drug Discount cards are leading to higher healthcare spending in Canada.

Brand-name drug discount cards — also known as co-pay cards — are coupons offered by drug manufacturers to encourage patients to use brand-name drugs even after much cheaper generics became available.

Despite often boosting savings for customers, the study’s findings published in the Canadian Medical Association Journal show that drug discount cards actually increased private insurer costs by 46 per cent and public insurer costs by 1.3 per cent, compared to patients purchasing generics instead.

“We know that generic drugs are equally effective for the vast majority of patients. Given that, I believe these cards are leading to unjustifiable increases in health care costs,” said the study’s lead author Michael Law from the University of British Columbia in Canada.

While discount cards decreased some patients’ out-of-pocket costs by 7 per cent on an average, the study surprisingly found that many patients who filled prescriptions using a card were worse-off financially as a result.

This wasn’t the case for all drugs, but in some cases patients could pay up to $10 more out-of-pocket when using a discount card.

The study used Canadian national pharmacy data from 2.82 million prescriptions for 89 different medications where brand-name drug discount cards were used and compared the costs of these prescriptions to matched generic equivalents.

Discount
Researchers have found that brand-name Drug Discount cards are leading to higher healthcare spending in Canada. Pixabay

The researchers said that patients, their clinicians and employers should be aware of the impact that brand-name discount cards have on the healthcare system.

For example, the increased costs to private insurers will likely be passed on to the patients and their employers in the form of increased insurance premiums.

ALSO READ: Ram Mandir To Be Built In Ayodhya By 2022

“Regardless of whether they hold insurance, patients should check the relative price between brand-name drugs with a discount card and the equivalent generics at their pharmacy,” said Law. (IANS)